Hi, ive recently bought a house with what ive been told is less than 3 years old protherm combi boiler.
The hot water from this is very hit and miss despite the central heatin being excellent. If i turn a tap on full, the hot water goes warm, then hot, then warm, then cold, then a bit warmer then hot and repeats the cycle, but not in the same order always. Ive tried running the taps only half open to see if the flow affects it and sometimes, if i start at a low flow and keep it low the water gets extremely hot, other times, its as hit and miss as when the taps are fully open. Confused? yeah, me too :-)
There also seems to be confusion in the boiler itself, because the led display apparently should display the dhw temp when the taps are on, but sometimes this goes to 42 or more, yet the water coming out of the tap isnt hot? when it goes down to low 30's it might be rnning hotter to the touch than it was when the display said 40??!!
please help :-)